Numerical study of fatigue damage under random loading using rainflow cycle counting
International Journal of Structural Integrity
ISSN: 1757-9864
Article publication date: 8 August 2020
Issue publication date: 3 February 2021
Abstract
Purpose
The purpose of this scientific work is to simulate the fatigue damage under random loading taking into account the mean stress effect on fatigue lifetime and using the rainflow counting technique to assess the fatigue damage.
Design/methodology/approach
The study of fatigue under random loading is based on same concepts which as constant loading with addition of damage summation. The damage of materials due a stress cycle depends not only on the alternating stress but also on the mean stress.
Findings
The cycles counting simulation method allows quantifying the hysteresis loops, even if for small amplitude stresses.
Originality/value
The cycles are low or medium; the damage occurs most often, the higher values of alternating stresses cause the most failure of materials.
Keywords
Acknowledgements
This work was financially supported by: base Funding–UIDB/04708/2020 and Programmatic Funding–UIDP/04708/2020 of the CONSTRUCT–Instituto de I&D emEstruturas e Construções–funded by national funds through the FCT/MCTES (PIDDAC).
Citation
Kebir, T., Correia, J., Benguediab, M. and Jesus, A.M.P.d. (2021), "Numerical study of fatigue damage under random loading using rainflow cycle counting", International Journal of Structural Integrity, Vol. 12 No. 1, pp. 149-162. https://doi.org/10.1108/IJSI-04-2020-0041
Publisher
:Emerald Publishing Limited
Copyright © 2020, Emerald Publishing Limited